Onana swapped the Stade Pierre-Mauroy for Goodison Park with the Toffees coughing up £33.7m to push through the signing.
The 20-year-old versatile midfielder was also a long-time target for West Ham United, but opted to move to Everton instead.
Now a full-time Belgian international, Onana named Lampard as one of the big reasons that swayed him in favour of a move to Everton.
He pointed to Lampard’s achievements from a long and distinguished playing career and added that interest from the current Everton boss meant a lot to him.
Onana is looking forward to learning as much as he can under Lampard’s guidance and take his game to the next level.
“Obviously, the manager [Frank Lampard] was one of the big reasons”, Onana told evertontv.
“As you know, he’s had a big career in England – a midfielder, too.
“It means a lot to gain interest from him.
“Of course, I can learn a lot from him.
“He played at the highest level possible and won a lot, so I think he can bring me a lot of things.”
Onana made 42 appearances in all competitions for Lille during the 2021/22 season, scoring three goals and laying on a single assist, playing in four different positions throughout the campaign.
Everton lost their opening game of the season 1-0 to Chelsea at Goodison Park and will travel to Birmingham to face Aston Villa on Saturday in search of their first points this campaign.
